the Messenger of Allah slaughtered some of his sacrificial animals with his won hand, and someone else slaughtered some of them. (Sahih )  

أَنَّ رَسُولَ اللَّهِ ﷺ نَحَرَ بَعْضَ بُدْنِهِ بِيَدِهِ وَنَحَرَ بَعْضَهَا غَيْرُهُ